River hydraulics and regulations of rivers, research of river processes in situ, stochastic research of river occurrences, mathematical modeling of river processes and numerical solution of partial differential equations using computers, mathematical models for calculation of deformation of river beds in natural conditions and under the influence of river regulatory structures, unsteady flow of water and sediment in rivers, functionality and stability of regulatory constructions, filling accumulation with river sediments. Planning method of water management systems, methods of evaluation of complex water management systems, development of mathematical models of running complex water management systems in real-time and processing water resources balance on a local and global level. System analysis, planning and management of the environmental protection systems, particularly the protection of waters, application of the theory of fuzzy sets to better define the categorization and classification of watercourse and classification of waters, application and development of GIS information systems in the field of water management and environmental protection.

Editor of two issues of the “Water Sciences and Technology” journal, UNESCO expert, President of the National Committee for the International Hydrological Programme of UNESCO, Vice President of the Scientific Board of the UNESCO Commission of Serbia and Montenegro

Membership

International Association of Hydraulic Researchers (IAHR), International Association on Water Quality (IAWQ), Honorary Member Hungarian Society for Hydrology, Serbian Society of Hydrologists, Serbian Hydrological Society, Serbian Water Pollution Control Society, Association for Water Technology and Sanitary Engineering.